We're dividing 143760 by 30 
We want to figure out the number of times 143760 can be divided by 30.

Step 1:
1 divided by 30 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 30

Step 2:
30 goes into 14 0 times with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 14, we get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 30

Going ahead to step 3:
30 goes into 143 4 times with a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 120 from 143 to get 23.
Bring next digit (7) of the dividend behind the 23 and repeat the process: 237 / 30

Let's proceed to step 4:
If we divide 237 by 30, we get 7 and a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
The remainder is 27 after subtracting 210 from 237.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 30

On to step 5:
30 can be fit into 276 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 479.0
Deduct 270 from 276 and we're left with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 30

Going ahead to step 6:
When dividing 60 by 30, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 4792.0
Deduct 60 from 60 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
If we divide 0 by 30, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4792.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
30 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4792.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 4792.0 with a remainder of 0.0.